CVE-2024-45594

Decidim allows cross-site scripting (XSS) in the online or hybrid meeting embeds

7.7 HighFix available

Decidim is a participatory democracy framework. The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL. This vulnerability is fixed in 0.28.3 and 0.29.0.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.26%Up 0.2 points since Nov 14, 2024

What each source reports

CVE List Score used 7.7

Decidim allows cross-site scripting (XSS) in the online or hybrid meeting embeds

Record: CVE-2024-45594
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2024-3271 7.7

Record: EUVD-2024-3271
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-j4h6-gcj7-7v9v 5.1

decidim-meetings Cross-site scripting vulnerability in the online or hybrid meeting embeds

Impact

The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL.

Patches

Not available

Workarounds

Disable the creation of meetings by participants in the meeting component.

References

OWASP ASVS v4.0.3-5.1.3

Credits

This issue was discovered in a security audit organized by mitgestalten Partizipationsbüro against Decidim. The security audit was implemented by the Austrian Institute of Technology.

Record: GHSA-j4h6-gcj7-7v9v
CVSS 4.0: 5.1 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.7

Record: CVE-2024-45594
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.7

Decidim allows cross-site scripting (XSS) in the online or hybrid meeting embeds

Record: CVE-2024-45594
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-j4h6-gcj7-7v9v 5.1

decidim-meetings Cross-site scripting vulnerability in the online or hybrid meeting embeds

Impact

The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL.

Patches

Not available

Workarounds

Disable the creation of meetings by participants in the meeting component.

References

OWASP ASVS v4.0.3-5.1.3

Credits

This issue was discovered in a security audit organized by mitgestalten Partizipationsbüro against Decidim. The security audit was implemented by the Austrian Institute of Technology.

Record: GHSA-j4h6-gcj7-7v9v
CVSS 4.0: 5.1 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

decidim

Affected packages

Affected packages
Package	Affected	Fixed
`decidim-meetings` RubyGems	0.28.0 up to 0.28.3	0.28.3
`decidim-meetings` RubyGems	0.28.0 up to 0.28.3, plus listed versions 0.28.10.28.2	0.28.3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-45594 is a high vulnerability (CVSS 7.7) in Decidim, published November 13, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. Fixed in decidim-meetings 0.28.3.